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卡尔曼滤波后两节推导是不是有点问题呀? #10

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guangyaooo opened this issue Aug 4, 2019 · 0 comments
Open

卡尔曼滤波后两节推导是不是有点问题呀? #10

guangyaooo opened this issue Aug 4, 2019 · 0 comments

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@guangyaooo
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先贴一下课程视频徐亦达机器学习:Kalman Filter 卡尔曼滤波,大概到7分13秒左右在推导$x_{t}|y_{1},...,y_{t-1}$时,使用了$P(x_{t}|x_{t-1})=N(Hx+B,Q)$这个公式,但是$x_{t}|y_{1},...,y_{t-1}$是基于条件$y_{1},...,y_{t-1}$而不是基于条件$x_{t},y_{1},...,y_{t-1}$因此不应该使用$P(x_{t}|x_{t-1})=N(Hx+B,Q)$这个公式直接求$x_{t}|y_{1},...,y_{t-1}$,而应该使用视频右上角的边缘积分去求

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